Citas bibligráficas
Luyo, J., (2014). Evaluación sanitaria en pollos de engorde (ross 308), criados en cama nueva vs. cama reciclada (7 reusos/flameado) en granjas comerciales [Tesis, Universidad Nacional Mayor de San Marcos]. https://hdl.handle.net/20.500.12672/4715
Luyo, J., Evaluación sanitaria en pollos de engorde (ross 308), criados en cama nueva vs. cama reciclada (7 reusos/flameado) en granjas comerciales [Tesis]. PE: Universidad Nacional Mayor de San Marcos; 2014. https://hdl.handle.net/20.500.12672/4715
@misc{renati/476549,
title = "Evaluación sanitaria en pollos de engorde (ross 308), criados en cama nueva vs. cama reciclada (7 reusos/flameado) en granjas comerciales",
author = "Luyo Flores, Javier Hernan",
publisher = "Universidad Nacional Mayor de San Marcos",
year = "2014"
}
--- The influence of bedding material recycling for seven campaigns on new bed was evaluated and its impact on the health status of broilers from the Ross 308 line raised by 42 days under the system of industrial production during the months of June and July 2013, 23,000 male chickens (11,000 birds over new bed and bed recycled 12,000 on separate farms) were raised. Production parameters (mortality, body weight, feed intake, weight gain, feed conversion, uniformity and rate of European efficiency) were assessed. It was weekly determined morphometric index bursa, thymus, spleen, intestine and liver and spleen bursa ratio. The bursa and thymus were evaluated by histopathology at 21 and 35 days and antibody titers against Newcastle disease, Gumboro and bronchitis at baseline and at 42 days (end of season) . There were statistical differences (P < 0.05) in body weight with improved performance of the birds raised on recycled bed as well as best productive parameters. Statistical differences (P < 0.05) for weight and morphometric index of the bursa in the first three weeks with better value for birds reared on new bed were presented, also obtaining better bursa / spleen ratio. Bursa histopathology showed moderate to severe degree of injury for both groups and thymus lymphoid moderate at 21 days for birds reared on recycled bed depletion. Serology for avian infectious bronchitis (IBV) show high titers (13407) and large coefficient of variation (145.4 %) for birds reared on new bed, suggesting that this group was exposed to some variant of the virus. We conclude that treatment of bed reuse flamed and dry cleaning can be considered as an alternative within the schemes for rearing chickens without health problems compared with those using new bed. Keywords: bed recycled production parameters, relationship Bursa- spleen, lymphoid depletion.
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